These objectives are world-renowned for setting the standard of excellence for long working distance microscope optics.
They have achieved the best combination of working distance and optical performance by using a new approach¡ªavoiding outdated conventions used by competitors.
Making the objectives larger and longer has made the designs easier (95mm parfocalization length).
For an infinity corrected system, a secondary (or tube) lens is required.
All stated magnifications are based on a tube lens focal length of 200mm.
Works with all Mitutoyo parts and can be placed directly in a system currently utilizing Mitutoyo objectives.
| Name |
Magnification |
N.A. |
W.D.(mm) |
Focus |
Depth of Field (¦Ìm) |
Resolution |
| Length(mm) |
(¦Ìm) |
Long
Working
Distance
Infinity Plan
Apo NIR
Objective |
2x |
0.055 |
34.6 |
100 |
91 |
5 |
| 5x |
0.14 |
45 |
40 |
14 |
2 |
| 10x |
0.28 |
34 |
20 |
3.5 |
1 |
| 20x |
0.29 |
30.8 |
10 |
3.5 |
1 |
| 50x |
0.42 |
20.5 |
4 |
1.6 |
0.7 |
High level Numerical Aperture NA and Resolution NIR APO Objetives:
| NAME |
N.A. |
W.D.(mm) |
f¡ä(mm) |
R(¦Ìm) |
¡À¦¤p(¦Ìm) |
VISUAL FIELD |
VISUAL FIELD |
TRANSMITTANCE |
REMARK |
| (mm/¦Õ) |
(mm/1/2CCD) |
NIR Plan
Apo 20X |
0.45 |
16.7 |
10 |
0.61 |
1.36 |
¦µ1.2 |
0.24¡Á0.32 |
450nm~700nm>70%,
770nm~790nm>90% |
Achromatic
Wavelength:780nm |
NIR Plan
Apo 50X |
0.8 |
3.34 |
4 |
0.34 |
0.43 |
¦µ0.48 |
0.10¡Á0.13 |
450nm~700nm>70%,
770nm~790nm>90% |
Achromatic
Wavelength:780nm |
NIR Plan
Apo 50X |
0.67 |
10 |
4 |
0.7 |
1.6 |
¦µ0.48 |
|
450nm~700nm>70%,
770nm~790nm>90% |
Achromatic
Wavelength:780nm |
|
Tel:+86-25-85508286 
Fax:+86-25-85637370 
E-mail:sales@bwoptics.com 
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